WIEN97, A full potential linearized augmented plane wave package for calculating crystal properties. WIEN97. This program package allows you to perform electronic structure calculations of solids using the full-potential linearized-augmented-plane-wave (LAPW) method, one among the most accurate schemes for band structure calculations. It is based on density functional theory and uses the local (spin) density approximation (LDA) or the improved version of the generalized gradient approximation (GGA). It is an all-electron scheme including relativistic effects